2016ApJ...819..140G


C.D.S. - SIMBAD4 rel 1.7 - 2021.05.17CEST03:40:45

2016ApJ...819..140G - Astrophys. J., 819, 140 (2016/March-2)

Carbon chains and methanol toward embedded protostars.

GRANINGER D.M., WILKINS O.H. and OBERG K.I.

Abstract (from CDS):

Large interstellar organic molecules are potential precursors of prebiotic molecules. Their formation pathways and chemical relationships with one another and simpler molecules are therefore of great interest. In this paper we address the relationships between two classes of large organic molecules, carbon chains and saturated complex organic molecules at the early stages of star formation through observations of C4 H and CH3OH. We surveyed these molecules with the IRAM 30 m telescope toward 16 deeply embedded low-mass protostars selected from the Spitzer c2d ice survey. We find that CH3OH and C4H are positively correlated, indicating that these two classes of molecules can coexist during the embedded protostellar stage. The C4H/CH3OH gas abundance ratio tentatively correlates with the CH4/CH3OH ice abundance ratio in the same lines of sight. This relationship supports a scenario where carbon chain formation in protostellar envelopes begins with CH4ice desorption. Interstellar Medium

Abstract Copyright:

Journal keyword(s): astrochemistry - ISM: molecules - stars: formation - stars: protostars

Errata: erratum vol. 833, art. 125 (2016)

Simbad objects: 26

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Number of rows : 26

N Identifier Otype ICRS (J2000)
RA
ICRS (J2000)
DEC
Mag U Mag B Mag V Mag R Mag I Sp type #ref
1850 - 2021
#notes
1 2MASS J03250943+3046215 Y*O 03 25 09.430 +30 46 21.58     19.5     ~ 89 0
2 IRAS 03235+3004 Y*O 03 26 37.425 +30 15 28.39           ~ 73 0
3 NAME LDN 1455 IRS 1 cor 03 27 39.08 +30 13 03.1           ~ 146 0
4 NAME LDN 1455 IRS 4 cor 03 27 43.23 +30 12 28.9           ~ 65 0
5 2MASS J03280041+3008012 Y*O 03 28 00.411 +30 08 01.28           ~ 45 0
6 2MASS J03283450+3100510 Y*O 03 28 34.501 +31 00 51.01           ~ 70 0
7 IRAS 03271+3013 cor 03 30 15.159 +30 23 49.38           ~ 61 0
8 2MASS J03331284+3121241 Y*O 03 33 12.8441374518 +31 21 24.130538910           K0-M3 54 0
9 2MASS J03331667+3107548 Y*O 03 33 16.68 +31 07 54.9           ~ 105 2
10 JCMTSE J033317.8+310932 cor 03 33 17.85 +31 09 31.9           ~ 83 0
11 [HKM99] B1-b cor 03 33 20.32 +31 07 21.5           ~ 172 0
12 NAME Perseus Cloud SFR 03 35.0 +31 13           ~ 1134 0
13 IRAS 03445+3242 Y*O 03 47 41.603 +32 51 43.79           ~ 179 0
14 IRAS 04016+2610 Y*O 04 04 43.07064 +26 18 56.3904           ~ 240 0
15 IRAS 04108+2803 mul 04 13 54.9 +28 11 31           ~ 89 1
16 IRAS 04239+2436 Y*O 04 26 56.29704 +24 43 35.3280           ~ 149 0
17 LDN 1527 DNe 04 39 53 +25 45.0           ~ 530 0
18 NAME Taurus Complex SFR 04 41.0 +25 52           ~ 3694 0
19 TMC-1 MoC 04 41 45.9 +25 41 27           ~ 1423 0
20 NAME Serpens Cloud SFR 18 29 49 +01 14.8           ~ 970 2
21 [EC89] SVS 4-5 Y*O 18 29 57.59 +01 13 00.6           ~ 32 1
22 2MASS J18295785+0112514 Y*O 18 29 57.858 +01 12 51.40           ~ 59 3
23 LDN 1014 cor 21 24 05.9 +49 59 07           ~ 92 0
24 NAME LDN 1014 IRS Y*O 21 24 07.58 +49 59 08.9           ~ 77 0
25 PSCz Q23238+7401 Y*O 23 25 46.65 +74 17 37.2           ~ 54 1
26 LDN 1262 MoC 23 25 47 +74 17.6           ~ 131 0

    Equat.    Gal    SGal    Ecl

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2021.05.17-03:40:45

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